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2. General Theory of Shells and Its Applications in Engineering;Vlasov;NASA Translation N64-19883 Washington,1964
3. Variational Methods of Analysis of Thinwalled Airplane Structures;Obrazcov,1966
4. Woelbkrafttorsion duenwandiger Staebe mit geschlosenem Profil;Kollbrunner;Schweizer Stahlbau-Vereinigung, Mitt. der Tech. Kommision,1966
5. A consistent discrete element technique for thinwalled assemblages;Krajcinovic;Int. J. Solids Struct,1969